Re: earmhf issues on Beaglebone Black

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Tue, Jul 22, 2014 at 02:58:39PM -0700, Matt Thomas wrote:
> 
> On Jul 22, 2014, at 2:45 PM, Manuel Bouyer <bouyer%antioche.eu.org@localhost> 
> wrote:
> 
> > AFAIK uvm_fault() is not called.
> > we enter data_abort_handler() with (fsr & FAULT_TYPE_MASK) == 0xe.
> > At line 278, data_aborts[fsr & FAULT_TYPE_MASK].func is not NULL
> > (it's dab_buserr() ) so we call it and goto to either do_trapsignal or out.
> > 
> > I just checked, both freebsd and linuxn handle fsr & FAULT_TYPE_MASK) == 0xe
> > as we do, I didn't see anything special.
> 
> I don't understand why the fault type is 0xe.  it should be 0x5.
> 
> can you print armreg_ttbr_read() and pm->pm_l1 as well?

Sure, here it is:
data_abort_handler: data_aborts fsr=0x80e far=0x20000
dab_buserr far 0x20000 -> NULL pm->pm_l1[far >> L1_S_SHIFT] = 0x0
pm->pm_l1 0x9f036000 armreg_ttbr_read() 0x9f03601b

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--